問題 1-1 奇数偶数自動判別プログラム

'''
Check odd or even
'''
def odd_or_even(a):
    num_show = 9
    if a%2==0:
        print('{0} is even.'.format(a))
        for i in range(a+2, (a+2) + (num_show * 2)):
            if i%2==0:
                print(i)
    else:
        print('{0} is odd.'.format(a))
        for i in range(a+2, (a+2) + (num_show * 2)):
            if i%2 != 0:
                print(i)


if __name__ == '__main__':
    a = input('Enter a number: ')
    a = float(a)
    if not a.is_integer():
        print('Enter a integer please.')
        exit(0)

    odd_or_even(int(a))